The chemical formula of ammonium metatungstate hydrate is (NH4)6H2W12O40-xH2O. where x represents the number of water molecules, which may vary depending on the preparation conditions. This chemical has a wide range of industrial applications, such as in the manufacture of tungsten metal, alloy steel, and fire-resistant fabrics, as well as being the main raw material for tungsten-based catalysts in oil refineries.
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